<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>5.数组原型</title>
  </head>
  <body>
    <script type="text/javascript" >
        let arr = [1,3,5]
        arr.push(7)

        console.log(arr.push === Array.prototype.push)
    </script>
  </body>
</html>